Process of making colophony and colophony-soap.



UN T DsT Es P TENT OFFICE.

AcoUB AK'I'SCI-IOURiN, or liK'rscHoUmNsKI TUPIK, nUssIA.

PROCESS OF MAKING COLOPH ONY AND COLOPHONY-SOAP.

No Drawing.

To all whom it may concern:

Be it known that L'JACOUB AKTSGHOURIN, a subject of the Czar of Russia, residing in Aktschour-inski Tupik, on the Moscow- Kasan Railway, in the Empire of Russia, have invented certain new and useful Improvements in Processes of Making Colophony and Colophony-Soap, of which the following is a specification.

This invention relates to an improved process of making colophony and colophonysoa IIeretofore c'olophony and soap from the same were made by subjecting pitch containing woods to the action of an alkali. These processes have the very objectionable disadvantage that they consume too much of the alkali in icy-reactions, and that at the higher temperatures employed the alkali decomposes the incrusting substances or gums of the wood, by which substances the cells of the wood are held together. Besides the rosin-soap obtained has'a dirty appearance and assumes due to the decomposition-prod- ..uotsbf the incrusting substances by the action of the alkali 011 the same, adisagreeable brown color.

The object ofthis process is to overcome these objections, and for this purpose the invention consists of a process of making colophony and eolophony-soap by treating'the shavingsor pther wooden bodies after 'distilling oil the turpentine, with a diluted solution of an alkali under pressure and at a temperature below the boiling point of water and then separating the mixture of soap-glue and colophony-einulsion by mechanical means.

In carrying out the improved process, the Wood is treatml in the form of shavings, small pieces and the like, with the alkalisolution under pressure, but at a lower temperature than 100 C., as it was found that comparatively weak solutions of alkali did S pecificationof Letters Patent.

Patented se t; so, 1913.

I Application filed October 24, 1911. Serial 1}]0. 656,505.

not act on ordecompose the incrusting or gummy. substances of the wood. Besides, the alkali-Solution converts the colophony under these conditions into an .emulsion, without saponification, so that a considerably smaller quantity of alkali is necessary for th'ereaction than in the processes heretofore employed.

In the production ofcolophony and colophony-soapby the process mentioned, a di-' luted solution of an alkali I is permitted to act on the shavings, etc.after distilling the vapors of turpentinewhile simultaneously the pressure in the still is raised to several atmospheres, care being taken that the boiling takes place at a tem-' perature from 80 to 90 C. and at a pressure of from 2 to. 3 atmospheres. Simultaneously the mixture is subjected to agitation in the still by'suitable stirring means. After the process of saponification and the separation of the colophony has taken place, the liquor which is composed of a mixture of soap-glue and colophony-emulsion isthrown ofi from the shavings in a centrifugal machine.

The process herein described of making resin and rosin-soap, from shavings of rosinous Woods, which consists in distilling off the turpentine from the shavings, then treating the shavings with a diluted solution of alkali under a pressure of from 2 to 3 atmospheres and at a temperature below 100 C., and separating the rosin-emulsion and soap-glue by mechanical means.

; In testimony that I claim the foregoing as my invention, I have signed'my name in presence of two subscribing witnesses.

JACOUB AK rsoHoURIN. 

